All Israel gathered themselves to David That is, all the tribes of Israel, as it is expressed 2 Samuel 5:1, by their elders (1Ch 11:3) and officers, and a great multitude of their soldiers and people. The Lord said unto thee Or, concerning thee: for it is apparent that they knew it was God's will David should be king, and therefore many of them had opposed David hitherto against their own consciences.
Related Commentaries of 1 Chronicles 11:1
1 Chronicles 11:1-2
1 Then all Israel gathered themselves to David unto Hebron, saying, Behold, we are thy bone and thy flesh.
2 And moreover in timea past, even when Saul was king, thou wast he that leddest out and broughtest in Israel: and the LORD thy God said unto thee, Thou shalt feed my people Israel, and thou shalt be ruler over my people Israel.