Charles H. Spurgeon on Psalms 103:9

He will not always chide. Certainly it is as unpleasing to God to chide, as it is to us to be chidden; and so little he likes of anger, that he rids his hands of it as fast as th can: he is not so slow in coming to it, but he is as quick in getting from it; for chiding is a bar to mercy, and anger an impediment to compassion; nothing is so distasteful to God as that any block should lie in the way of his mcrcy, or that the liberty of his compassion should have any cause of restraint: and then we may be sure he will not himself lay a block in the way with chiding, nor be a cause to restrain his compassion by keeping his anger. Sir R. Baker.