On the mountain path of election, Jesus says: “I have manifested your name to the people whom you gave me out of the world. Yours they were, and you gave them to me, and they have kept your word” (John 17:6). And in another place, he says, “No one can come to me unless it is granted him by the Father” (John 6:65). Or,
as God says in Romans 9:15, “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.” Then Paul draws out the inference: “So then it depends not on human will or exertion, but on God, who has mercy” (v. 16).
But on the mountain path of God’s desire for all, Jesus says to the city that is about to kill him: “O Jerusalem, Jerusalem, the city that kills the prophets and stones those who are sent to it! How often would I have gathered your children together as a hen gathers her brood under her wings, and you were not willing!” (Luke 13:34). And he offers an open and free invitation to everyone who is heavy laden, thirsty, and perishing: “Come to me, all who labor and are heavy laden, and I will give you rest” (Matt. 11:28); “If anyone thirsts, let him come to me and drink” (John 7:37); “For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life” (John 3:16)
From the book "Does God Desire All to Be Saved?"