1 Samuel 1:28 Therefore also I have lent him to the Lord; as long as he liveth he shall be lent to the Lord. And he worshipped the Lord there.
1 Samuel 3:7 Now Samuel did not yet know the Lord, neither was the word of the Lord yet revealed unto him.
A comparison of these two verses shows that Samuel as a young child was worshiping the Lord in the house of the Lord (cf. 1 Sam. 1:24) before he knew the Lord. Does this passage teach that God accepts worship from some unbelievers?