'Observe' in the Bible

Now observe how great this man was to whom Abraham, the patriarch, gave a tenth of the choicest spoils.

Remember your leaders who have spoken God’s word to you. As you carefully observe the outcome of their lives, imitate their faith.

Do not be carried away by diverse and strange teachings; for it is good for the heart to be established and strengthened by grace and not by foods [rules of diet and ritualistic meals], which bring no benefit or spiritual growth to those who observe them.