'Marked' in the Bible

So David gathered all Israel together, from the Shihor [watercourse] of Egypt, to the entrance of Hamath [in the north], to bring the ark of God from Kiriath-jearim.

Then David said, The ark of God may not be moved by any but the Levites, for they have been marked out by God to take the ark of God, and to do his work for ever.

Saying, Put not your hand on those who have been marked with my holy oil, and do my prophets no wrong.

And with them Heman and Jeduthun, and the rest who were marked out by name to give praise to the Lord, for his mercy is unchanging for ever;

And David the king said to all the people, Solomon my son, the only one who has been marked out by God, is still young and untested, and the work is great, for this great house is not for man, but for the Lord God.