Leviticus 19:32 "'You shall rise up before the gray head, and honor the face of an old man, and you shall fear your God. I am Yahweh. (See NIV)
Ezekiel 9:6 Slay utterly old and young, both maids, and little children, and women: but come not near any man upon whom is the mark; and begin at my sanctuary. Then they began at the elderly men who were before the house. (WBS)