1 John 3:19-24 NASB1995
We will know by this that we are of the truth, and will assure our heart before Him in whatever our heart condemns us; for God is greater than our heart and knows all things. Beloved, if our heart does not condemn us, we have confidence before God; and whatever we ask we receive from Him, because we keep His commandments and do the things that are pleasing in His sight.
This is His commandment, that we believe in the name of His Son Jesus Christ, and love one another, just as He commanded us. The one who keeps His commandments abides in Him, and He in him. We know by this that He abides in us, by the Spirit whom He has given us.
NASB1995: New American Standard Bible - NASB 1995