| Barnes' Notes on the Bible It is better to trust in the Lord than to put confidence in man - This is stated apparently as the result of his own experience. He had found people weak and faithless; he had not so found God. Compare Psalm 40:4; Psalm 62:8-9. Literally, "Good is it to trust in Yahweh more than to confide in man." This is the Hebrew form of comparison, and is equivalent to what is stated in our version, "It is better," etc. It is better, (1) because man is weak - but God is Almighty; (2) because man is selfish - but God is benevolent; (3) because man is often faithless and deceitful - God never; (4) because there are emergencies, as death, in which man cannot aid us, however faithful, kind, and friendly he may be - but there are no circumstances in this life, and none in death, where God cannot assist us; and (5) because the ability of man to help us pertains at best only to this present life - the power of God will be commensurate with eternity.
Clarke's Commentary on the BibleBetter to trust in the Lord - Man is feeble, ignorant, fickle, and capricious; it is better to trust in Jehovah than in such.
Gill's Exposition of the Entire BibleIt is better to trust in the Lord,.... This, with what follows in Psalm 118:9, is the conclusion from the above premises and experience; it is good to trust in the Lord; such enjoy peace, are in safety, shall not want any good thing, nor ever be ashamed and confounded: the Targum is, "it is better to trust in the Word of the Lord;'' than to put confidence in man; it is not good to put confidence in man at all; it is trusting to a broken staff, to a mere shadow, which can yield no support or relief: it is best to trust in the Lord; he is able to help, as well as willing; he is faithful to his word, and unchangeable in his promises; whereas man, though he may have a will to help, oftentimes has it not in his power; and when it is in his power, and has promised it, he disappoints, being changeable or unfaithful. Wherefore trust not in man, but in the Lord; yea, cursed is the man that trusts in man; see Jeremiah 17:5.
Geneva Study BibleIt is better to trust in the LORD than to put confidence {d} in man. (d) He shows that he had trusted in vain if he had put his confidence in man, to have been preferred to the kingdom and therefore he put his trust in God and obtained.
Jamieson-Fausset-Brown Bible Commentary8, 9. Even the most powerful men are less to be trusted than God.
Matthew Henry's Concise Commentary118:1-18 The account the psalmist here gives of his troubles is very applicable to Christ: many hated him without a cause; nay, the Lord himself chastened him sorely, bruised him, and put him to grief, that by his stripes we might be healed. God is sometimes the strength of his people, when he is not their song; they have spiritual supports, though they want spiritual delights. Whether the believer traces back his comfort to the everlasting goodness and mercy of God, or whether he looks forward to the blessing secured to him, he will find abundant cause for joy and praise. Every answer to our prayers is an evidence that the Lord is on our side; and then we need not fear what man can do unto us; we should conscientiously do our duty to all, and trust in him alone to accept and bless us. Let us seek to live to declare the works of God, and to encourage others to serve him and trust in him. Such were the triumphs of the Son of David, in the assurance that the good pleasure of the Lord should prosper in his hand. | 
