John Gills Exposition of the Bible Commentary - Psalms 16:9
Therefore my heart is glad ,.... Because he had the Lord always in view; he was at his right hand, for his support and assistance, as well as because of what is expressed in the next verses: this is the same with rejoicing in spirit, Luke 10:21 ; it denotes an inward joy, and fulness of it, because of the Lord's presence with him; see Acts 2:28 ; and my glory rejoiceth ; meaning either his soul, which is the most glorious and noble part of man, as Aben Ezra, Kimchi, and Ben Melech... read more
Matthew Henry's Complete Commentary - Psalms 16:8-11
All these verses are quoted by St. Peter in his first sermon, after the pouring out of the Spirit on the day of pentecost (Acts 2:25-28); and he tells us expressly that David in them speaks concerning Christ and particularly of his resurrection. Something we may allow here of the workings of David's own pious and devout affections towards God, depending upon his grace to perfect every thing that concerned him, and looking for the blessed hope, and happy state on the other side death, in the... read more