He has loved us with an everlasting love.
Then why does it say he gets angry with a sinner?
Anger is one of the strongest evidences and expressions of God’s love. If you had a child who lied, swore, and stole and you DIDN’T care what he does THAT would be a sign of no love, of indifference. Because I love him, because I want him to grow up with integrity and character, it makes me angry to see him not live up to his potential and take that course. Now how I channel that anger determines whether it is motivated out of love or something sinful in my own spirit.
God loves the sinner that he gets angry with them, with us, when we willfully disobey.