God has always had a people that were different.
The "difference" is the work of God.
Ex 11:7
7 But against any of the children of Israel shall not a dog move his tongue, against man or beast:
that ye may know how that the LORD doth put a difference between the Egyptians and Israel.KJV
Different in their concept of God... ONE GOD.
Deut 6:4
4 Hear, O Israel: The LORD our God is one LORD:
KJV
Different in their life style.
1 Peter 4:1-4
1 Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;
2 That he no longer should live the rest of his time in the flesh to the lusts of men, but to the will of God.
3 For the time past of our life may suffice us to have wrought the will of the Gentiles, when we walked in lasciviousness, lusts, excess of wine, revellings, banquetings, and abominable idolatries:
4 Wherein they think it strange that ye run not with them to the same excess of riot, speaking evil of you:
KJV