You're taking verses out of context and applying to Christians what God said to Israel. For example:

(Isaiah 54:11-17 NIV) "O afflicted city, lashed by storms and not comforted, I will build you with stones of turquoise, your foundations with sapphires. {12} I will make your battlements of rubies, your gates of sparkling jewels, and all your walls of precious stones. {13} All your sons will be taught by the LORD, and great will be your children's peace. {14} In righteousness you will be established: Tyranny will be far from you; you will have nothing to fear. Terror will be far removed; it will not come near you. {15} If anyone does attack you, it will not be my doing; whoever attacks you will surrender to you. {16} "See, it is I who created the blacksmith who fans the coals into flame and forges a weapon fit for its work. And it is I who have created the destroyer to work havoc; {17} no weapon forged against you will prevail, and you will refute every tongue that accuses you. This is the heritage of the servants of the LORD, and this is their vindication from me," declares the LORD.

(Isaiah 55:1-5 NIV) "Come, all you who are thirsty, come to the waters; and you who have no money, come, buy and eat! Come, buy wine and milk without money and without cost. {2} Why spend money on what is not bread, and your labor on what does not satisfy? Listen, listen to me, and eat what is good, and your soul will delight in the richest of fare. {3} Give ear and come to me; hear me, that your soul may live. I will make an everlasting covenant with you, my faithful love promised to David. {4} See, I have made him a witness to the peoples, a leader and commander of the peoples. {5} Surely you will summon nations you know not, and nations that do not know you will hasten to you, because of the LORD your God, the Holy One of Israel, for he has endowed you with splendor."