1 Samuel 12:2
"...As for me, I have grown old and gray, and my sons are here with you, and I have led you from my youth until this day."
We can see from 1 Samuel 12:2 that Samuel had a faithful record of service from his youth until he was 'old and gray'. He started his service as a child originally because of a promise his mother made. But, he continued this lifestyle because of his own faith. Similarly many children start learning about Jehovah because of their parents. To follow Samuel's example everyone needs to develop their own faith by developing a personal relationship with Jehovah.
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