But you who HELD FAST to YHWH your God are alive today, every one of you [Dt 4.4].You shall fear YHWH your God; you shall serve Him and CLING to Him, and you shall swear by His name [Dt 10.20].For if you are careful to keep all this commandment which I am commanding you to do, to love YHWH your God, to walk in all His ways and HOLD FAST to Him, then YHWH will drive out these nations from before you [Dt 11.22-23].You shall follow YHWH your God and fear Him; and you shall keep His commandments, listen to His voice, serve Him, and CLING to Him [Dt 13.4].[also see Dt 30.19-20]Only be very careful to observe the commandment and the law which Moses the servant of YHWH commanded you, to love YHWH your God and walk in all His ways and keep His commandments and HOLD FAST to Him with all your heart and soul [Jsh 22.5].My soul CLINGS to You; Your right hand upholds me [Ps 63.8].
But the first usage of this word in the Bible sets the stage and the imagery for these others. Keep in mind, the first employment of "dabaq" is before sin/curse/deception ever entered the picture:
For this reason, man shall leave his father and mother, and be JOINED to his wife; and they shall become one flesh [Gn 2.24].