You shall fear the Lord your God, and him alone shall you serve. You shall cling to him, and you shall swear by his name
Other versions
King James Version
Thou shalt fear the LORD thy God; him shalt thou serve, and to him shalt thou cleave, and swear by his name.English Standard Version
You shall fear the LORD your God. You shall serve him and hold fast to him, and by his name you shall swear.New International Version
Fear the LORD your God and serve him. Hold fast to him and take your oaths in his name.