The Lord hath been mindful of us - This would be especially appropriate if the psalm was written, as is commonly supposed, after the return from the captivity of Babylon. In such circumstances it would be every way proper to bring before the mind of the people the fact that God had remembered them and had delivered them.
He will bless us - Our past experience furnishes the fullest evidence that he will continue to bless us. He who has delivered us from so great calamities, and who has restored us to our native land after so long and so painful a captivity, will not forsake us now. There can be now no circumstances in which he cannot bestow on us all the blessings which we need; there will be none when we may not hope that he will bless us. If he could save us from such troubles, be can save us from all; if he did thus interpose, we may argue that he will always grant us his help when we need it.
He will bless the house of Israel; he will bless the house of Aaron - Compare Psalms 115:9-10.