1 Peter 2:9

New International Version

⁹ But you are a chosen people, a royal priesthood, a holy nation, God’s special possession, that you may declare the praises of him who called you out of darkness into his wonderful light.

Jeremiah 31:31-34

New International Version

³¹ “The days are coming,” declares the Lord,
    “when I will make a new covenant
with the people of Israel
    and with the people of Judah.
³² It will not be like the covenant
    I made with their ancestors
when I took them by the hand
    to lead them out of Egypt,
because they broke my covenant,
    though I was a husband to them,”
declares the Lord.
³³ “This is the covenant I will make with the people of Israel
    after that time,” declares the Lord.
“I will put my law in their minds
    and write it on their hearts.
I will be their God,
    and they will be my people.
³⁴ No longer will they teach their neighbor,
    or say to one another, ‘Know the Lord,’
because they will all know me,
    from the least of them to the greatest,”
declares the Lord.
“For I will forgive their wickedness
    and will remember their sins no more.”

1 Corinthians 11:27-28

New International Version

²⁷ So then, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord. ²⁸ Everyone ought to examine themselves before they eat of the bread and drink from the cup.