A servant of God can give Jehovah his best when he has reached full spiritual growth, when he is a mature Christian.
فَٱلْمَسِيحِيُّ يُعْطِي أَفْضَلَ مَا لَدَيْهِ لِيَهْوَهَ حِينَ يَصِيرُ مُكْتَمِلَ ٱلنُّمُوِّ رُوحِيًّا .‏