Psalms 119:165 - Joseph Benson’s Commentary on the Old and New Testaments

Great peace have they which love thy law Hebrew, great peace is, or shall be, to the lovers of thy law, that is, great inward peace, satisfaction, and tranquillity of mind, arising from the sense of thy love to them, and of thy watchful care over them. In other words: “amidst the storms and tempests of the world, there is a perfect calm in the breasts of those who not only do the will of God, but love to do it. They are at peace with God by the blood of reconciliation; at peace with themselves by the answer of a good conscience and the subjection of those desires which war against the soul; at peace with all men by the spirit of charity; and the whole creation is so at peace with them, that all things work together for their good.” And nothing shall offend them Hebrew, ואין למו מכשׁול, to them is no stumbling-block, namely, such as they shall stumble at, and fall by, into sin and misery. “No external troubles can rob them of this great peace, no offences or stumbling-blocks, which are thrown in their way by persecution or temptation, by the malice of enemies, or the apostacy of friends, by any thing which they see, hear of, or feel, can detain or divert them from their course. Heavenly love surmounts every obstacle, and runs with delight the way of God's commandments.” Horne.