John Murray’s book Redemption: Accomplished and Applied is pretty freaking great:
It is frequently objected that this doctrine [particular redemption] is inconsistent with the full and free offer of Christ in the gospel. This is grave misunderstanding and misinterpretation. The truth really is that it is only on the basis of such a doctrine that we can have a free and full offer of Christ to lost men. What is offered to men in the gospel? It is not the opportunity of salvation. What is offered is salvation.