After isekaing to DXD, you didn't have any cheats or tricks, using your human mortal coil and the wisp of will within the low tier sacred gear you were born with, you fought in two world wars and survived numerous disasters, finally grinded your way up to inheriting and then becoming the new God of the Bible. Just then, you hear a sound, "Ding! Your isekai cheat has arrived!"
Or are you talking about your relationship with them the moment they are summoned? In which case you might need to put in some elbow grease but not so much with their absolute obedience and loyalty.