Job 30:21

Thou art become cruel to me
Or "turned", or "changed" {g}, to be cruel to me. Job suggests that God had been kind and gracious to him, both in a way of providence, and in showing special love and favour to him, in a very distinguishing manner; but now he intimates his affections were changed and altered, and these were alienated from him, and his love was turned into an hatred of him; this is one of the unbecoming expressions which dropped from his lips concerning God; for the love of God to his people is never changed; it remains invariable and unalterable, in all dispensations, in every state and condition into which they come; there may be some of God's dispensations towards them, which may have the appearance of severity in them; and he may make use of instruments to chastise them, which may use them cruelly; but even then his heart yearns towards them, and, being full of compassion, delivers out of their hands, and saves them, ( Jeremiah 30:14 ) ( 31:20 ) ( Hosea 11:8 Hosea 11:9 ) ;

with thy strong hand thou opposest thyself against me;
God has a strong hand and arm, and none like him, and sometimes he puts forth the strength of it, and exerts his mighty power in afflicting his people, and his hand presses them sore, and they can scarcely stand up under it; and then it becomes them to humble themselves under the mighty hand of God, and patiently bear it; and sometimes they take him to be their adversary, an enemy unto them, and filled with hatred of them, indignation against them, setting himself with all his might and main to ruin and destroy them; and this is a sad case indeed, to have such apprehensions of God, though unjust ones; for, as if God be for us, who shall be against us? so if he be against us, it signifies little who is for us; for there is no contending with him, ( Job 9:3 Job 9:4 ) .