“I thought age should speak,
And a multitude of years should teach wisdom.
“But there is [a vital force and] a spirit [of intelligence] in man,
And the breath of the Almighty gives them understanding.
“Those [who are] abundant in years may not [always] be wise,
Nor may the elders [always] understand justice. – Job 32:7-9
The spirit of intelligence reflects the creative, animating power or divine influence of God.” The psalmist wrote: “You send out Your Spirit, they are created; You renew the face of the ground.” (Psalm 104:30). God’s creative, animating power was at work in the renewing of the face of the earth and restoring life upon it. “Spirit” is from the Hebrew ruach; while “breath” is the Hebrew word neshamah. However, in this instance, neshamah should also be translated “spirit,” because it is through God’s Spirit that He imparts to us spiritual understanding (1 Corinthians 2:11–14). By searching the spirit in man, God uncovers the very thoughts and intents of our hearts (Proverbs 20:27). It is through the Holy Spirit dwelling in us that God is able to impress within us His character, as we submit to His will (Romans 8:4). Through His Spirit we have fellowship with God, and become one with Him (2 Corinthians 13:14; Greek: koinonia, communion, fellowship, communication). Through that same Holy Spirit, God imparts not mere temporary, physical life, but His life—eternal life (Galatians 6:8)! The Holy Spirit is promised to those who obey God (John 14:15–16). To have the gift of eternal life imparted through the indwelling of the Holy Spirit requires believing the Gospel and repenting of sin (Mark 1:14–15). Holy Spirit, expressing God’s nature in all its power, vitality, perfection and purity, is distinct from other categories of spirit—such as human spirit, animal spirit, angelic spirits, or evil spirits.
For this reason, since the day we heard about it, we have not stopped praying for you, asking [specifically] that you may be filled with the knowledge of His will in all spiritual wisdom [with insight into His purposes], and in understanding [of spiritual things], so that you will walk in a manner worthy of the Lord [displaying admirable character, moral courage, and personal integrity], to [fully] please Him in all things, bearing fruit in every good work and steadily growing in the knowledge of God [with deeper faith, clearer insight and fervent love for His precepts]; the wise will hear and increase their learning, and the person of understanding will acquire wise counsel and the skill [to steer his course wisely and lead others to the truth]. – Colossians 1:9-10; Proverbs 1:5
In other words, you don’t have to wait till you are old to get wisdom. You are not a child of circumstance; you are peculiar in nature, created in the image of God.
Your inner man is your innermost being, i.e. your spirit. Every believer should (and can) hear from God. A believer who hears from God has an edge; they will never be taken unawares when things happen. The Spirit of God dwells in us. He abides with us to fellowship with us. Fellowship is communing; ‘communing’ requires communication. We need to learn to listen to the Spirit of God in us.