A mature Christian seeks God's will and asks for God's wisdom when facing a major decision. Believers must pray about decisions-- especially life decisions such as "Where shall I go to college?" "Should I marry this person?" "Should I bring my ailing parent to live in my home?" Such decisions have serious consequences, and they deserve the prayerful seeking of God's Perfect wisdom. But knowing God's will does not happen solely in prayer. It also requires a commitment to knowing His Word.

The Bible teachers that realizing (or proving) God's will is the result of habitually
Conforming your thinking and behavior to God's Word over a lifetime. As a Christian reads the Bible day by day their mind is renewed with a new way of thinking about life.  Worldly ideas, attitudes, and prejudices are replaced by thoughts that conform to God's ways.  This process takes time, and there are no shortcuts. The transformation is never complete until death.

The Christian who has ongoing fellowship with the Lord through His Word comes to decisions equipped with a biblically informed way of thinking. Knowing God's will at major decision points is much easier if you are seeking God's will every day in Bible reading and prayer.

Daniel 2:23 I thank thee, and praise thee, O thou God of my fathers, who hast given me wisdom and might,
                    and hast made known unto me now what we desired of thee: for thou hast now made known unto
                    us the king's matter.

Romans 12:1 I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living
                        sacrifice, holy, acceptable unto God, which is your reasonable service.

Romans 12:2 And be not conformed to this world: but be ye transformed by the renewing of your mind,
                       that ye may prove what is that good, and acceptable, and perfect, will of God.

Ephessians 1:9 Having made known unto us the mystery of his will, according to his good pleasure which he hath
                         purposed in himself:

God will make known to us the purpose he has for us if we only seek Him.

Colossians 1:9 For this cause we also, since the day we heard it, do not cease to
                         pray for you, and to desire that ye might be filled with the knowledge of his will in all
                        wisdom and spiritual understanding;

We need to continually be in prayer for our brothers and sisters in Christ praying for their
growth.

Under the old covenant, human access to God was limited. Only the high priest once a year could enter the Most Holy Place to meet directly with the Lord. New Covenant believers, however, regarded the tearing of the veil, the thick curtain that separated the holy place from the Most Holy Place, at the time of the Crucifixion as a sign that all could freely come to God thru Christ Jesus

Mathew 27:51 And, behold, the veil of the temple was rent in twain from the top to the
                        bottom; and the earth did quake, and the rocks rent;
Mathew 27:52 And the graves were opened; and many bodies of the saints which slept arose,
Mathew 27:53 And came out of the graves after his resurrection, and went into the holy
                        city, and appeared unto many.
Mathew 27:54 Now when the centurion, and they that were with him, watching Jesus, saw the earthquake,
                        and those things that were done, they feared greatly, saying, Truly this was the Son of God.

Prior to the death of Jesus on the Cross...
*   Only priests (of the Levite tribe) could offer gifts and sacrifices
*   Only Hebrews could be called the sons and daughters of the Lord
*   Only those who kept the Day of Atonement were considered in right relationship with God.
*   Only those who fully knew and followed the Law could be called righteous.

After the death of Jesus on the Cross...
*   Whoever calls on the name of the Lord shall be saved

Romans 10:12 For there is no difference between the Jew and the Greek: for the same Lord over all is
                        rich unto all that call upon him.
Romans 10:13 For whosoever shall call upon the name of the Lord shall be saved.

*A person can be called a child of God regardless of race, sex, or social status

Galatians 3:26 For ye are all the children of God by faith in Christ Jesus.
Galatians 3:27 For as many of you as have been baptized into Christ have put on Christ.
Galatians 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is
                          neither male nor female: for ye are all one in Christ Jesus.
Galatians 3:29 And if ye be Christ's, then are ye Abraham's seed, and heirs according
                         o the promise.

*   Whoever believes in Christ, shall be counted as righteous ... and shall inherit everlasting life.

1 John 2:29  If ye know that he is righteous, ye know that every one that doeth   righteousness is born of him.