Angels
Psa 34:7
7 The angel of the Lord encampeth round about them that fear him, and delivereth them. KJV
Matt 5:22
22 But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. KJV
Heb 13:2
2 Be not forgetful to entertain strangers: for thereby some have entertained angels unawares. KJV