The Belgic Confession of Faith
Article 16: The Doctrine of Election
We believe that— all human beings having thus fallen into perdition and ruin by the sin of the first pair—God exhibited divine character in mercy and justice.
God is merciful in withdrawing and saving from this perdition those who, in the eternal and unchangeable divine counsel, have been elected and chosen in Jesus Christ our Lord by his pure goodness, without any consideration of their works.
God is just in leaving the others in their ruin and fall into which they plunged themselves.