Though he fall,.... Into temptation, and by it into sins, and these very great ones; from a lively and comfortable exercise of grace, and a degree of steadfastness in the doctrine of grace: he shall not be utterly cast down; because he is in the arms of everlasting love, and in the hands of Christ Jesus; is on him as the sure foundation, and is kept by the power of God through faith unto salvation, and so shall not perish, but have everlasting life; for the Lord upholdeth him with his hand; with the right hand of his righteousness, and keeps him from falling finally and totally; see Isa 41:10; and See Gill on Psa 37:17.