I love the Lord - The Hebrew rather means, “I love, because the Lord hath heard,” etc. That is, the psalmist was conscious of love; he felt it glowing in his soul; his heart was full of that special joy, tenderness, kindness, peace, which love produces; and the source or reason of this, he says, was that the Lord had heard him in his prayers.
Because he hath heard ... - That is, This fact was a reason for loving him. The psalmist does not say that this was the only reason, or the main reason for loving him, but that it was the reason for that special joy of love which he then felt in his soul. The main reason for loving God is his own excellency of nature; but still there are other reasons for doing it, and among them are the benefits which he has conferred on us, and which awaken the love of gratitude. Compare the notes at 1 John 4:19.