Genesis 41:46
Now Joseph was 30 years old when he began serving Pharaoh king of Egypt. Joseph was commissioned by Pharaoh and was in charge of all the land of Egypt.
Genesis 37:2
This is the account of Jacob. Joseph, his seventeen-year-old son, was taking care of the flocks with his brothers. Now he was a youngster working with the sons of Bilhah and Zilpah, his father's wives. Joseph brought back a bad report about them to their father.
1 Samuel 16:21
David came to Saul and stood before him. Saul liked him a great deal, and he became his armor bearer.
Daniel 1:19
When the king spoke with them, he did not find among the entire group anyone like Daniel, Hananiah, Mishael, or Azariah. So they entered the king's service.
Numbers 4:3
from thirty years old and upward to fifty years old, all who enter the company to do the work in the tent of meeting.
2 Samuel 5:4
David was thirty years old when he began to reign and he reigned for forty years.
1 Kings 12:6
King Rehoboam consulted with the older advisers who had served his father Solomon when he had been alive. He asked them, "How do you advise me to answer these people?"
1 Kings 12:8
But Rehoboam rejected their advice and consulted the young advisers who served him, with whom he had grown up.
Proverbs 22:29
Do you see a person skilled in his work? He will take his position before kings; he will not take his position before obscure people.
Luke 3:23
So Jesus, when he began his ministry, was about thirty years old. He was the son (as was supposed) of Joseph, the son of Heli,
Luke 21:36
But stay alert at all times, praying that you may have strength to escape all these things that must happen, and to stand before the Son of Man."
Jude 1:24
Now to the one who is able to keep you from falling, and to cause you to stand, rejoicing, without blemish before his glorious presence,