The word of the Lord came to Jeremiah with God declaring His sovereignty over Jeremiah’s life. As if by way of introduction, the Lord comes into Jeremiah’s life in a new way which is announced by the declaration that God has plans for him. Not just plans – but plans for the work of God – this is what He means by “consecrated.”
Not only is God intimately interested in our lives, God takes an interest in our lives even before we exist. We are known before we can know. We are loved before we can love. We are consecrated for His purposes before we even understand His purposes.
As believers, we must remember that Romans 8:28-29 says that believers are called according to His purpose. Those “He foreknew, He also predestined to become conformed to the image of His son.” Our destiny, like Jeremiah’s, is to be consecrated - that is set apart - for the Lord’s purposes. If we are to be conformed to the image of His Son, we had better be about the business of proclaiming the kingdom of God as His Son did; we had better be making disciples and teaching them as Jesus did; we had better be serving one another even if it means performing the lowest task like washing feet; we had better be picking up our cross daily. Jeremiah was set apart to be a prophet before he was born; we were set apart before we were born to follow God’s Son. Just as God reassured Jeremiah that it was His words in the prophet’s mouth, so too our Lord has promised to always be with us and to give us the words to say when we need them.