God promises not only to give us a new heart, but to write on our hearts His commands. In other words: He promises to cause us to know Him.
Again, the Holy Spirit is the one who accomplishes this work in us. He teaches us about the Father’s nature and way—and in the process, He transforms us into Christ’s divine image.
Our Lord has sworn a sovereign oath to be merciful to us in our struggles against sin. Until full victory comes, He will be patient and loving with us, never casting us aside. He promises, “No matter what I demand of you, I will supply you with all the power you need to accomplish it. I will not ask anything of you for which I have not made provision.”
The same power that raised Jesus from the dead—and enabled Him to fulfill God’s law through a perfect, sinless life—now abides in us. God’s own Spirit is alive in us, providing all power over every work of the enemy.
When the enemy comes flooding into your soul, enticing you toward an old lust, call upon the Holy Spirit. Listen to His every whisper, and obey His every command.
“Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new” (2 Corinthians 5:17).
[Taken from : God is Faithful by David Wilkerson ]