2 Corinthians 3:5
Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God

Having been born again, we’ve received the life and nature of God. What this implies is that we can function with the ability of God because were associates of the God-kind; partakers of His divine nature:

“Whereby are given unto us exceeding great and precious promises: that by these ye might be partakers of the divine nature, having escaped the corruption that is in the world through lust” 2 Peter 1:4.

The Amplified version renders our opening verse thus: “not that we are fit, qualified, sufficient in ability as of ourselves, to form us in judgment or claim or count anything as coming from us, our power, and ability and sufficiency, are from God.” Therefore, we’re to know and recognize God as our qualification, competence and strength, and not have confidence in our physical abilities, knowing that He has endued us with power from on high.

This understanding informed David’s mentality when as a stripling he confronted and defeated the great Goliath of Gath. Conscious of God’s ability at work in him, he looked at Goliath and said, “You come against me with a sword, shield and spear, but I come against you in the Name of the Lord of host; the God of the armies of Israel” (1 Samuel 17:45). How important that we live and walk every day, in the consciousness that we are fully kitted with God’s glory and power because we function in His Name!

We’re not sufficient of ourselves; our sufficiency is a God-sufficiency! The power and ability by which we function are of God; that makes it unlimited! That means there’s no limit to how much you can achieve and how far you can go on your journey of success, because the power at work in you to make it happen is of God.

This is the reason why as a Christian, you ought not be defeated in life, because you’re sufficient in God’s sufficiency. The power and authority with which you function are His very own. When you speak, He’s the one speaking; when you minister, He’s the one ministering through you. You function in His stead; He gave you the power of attorney to function in His Name!

Confession
The ability of God is at work in me today, and I’m conscious of it! I don’t function in my own ability or strength, for God’s inherent ability is in me. The Lord renews my strength daily, and I’m divinely energized at all times for victory, in the Name of Jesus. Amen.

Further Study
Acts 1:8
But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.

Colossians 1:29
Whereunto I also labour, striving according to his working, which worketh in me mightily

Joagbaje:

This is the reason why as a Christian, you ought not be defeated in life, because you’re sufficient in God’s sufficiency. The power and authority with which you function are His very own. When you speak, He’s the one speaking; when you minister, He’s the one ministering through you. You function in His stead; He gave you the power of attorney to function in His Name!

When a born again carries the consciousness of who he carries on the inside
Nothing can stand before him successfully

Therefore, we’re to know and recognize God as our qualification, competence and strength, and not have confidence in our physical abilities, knowing that He has endued us with power from on high.

he is my qualification and competence,no wonder I can do anything,be anything I want to be,