'Join' in the Bible

David said to the whole Israelite assembly, "If you so desire and the Lord our God approves, let's spread the word to our brothers who remain in all the regions of Israel, and to the priests and Levites in their cities, so they may join us.

"""I'm also announcing to you that the LORD also will himself build a house for you. It will come about that when your life is complete and you go to join your ancestors, I will raise up your offspring after you, who is related to one of your sons, and I will fortify his kingdom.