From the beginning of human existence God has been calling sinners to come to Him.
1st – God Calls All People Outwardly (general call) – Ezekiel 33:10-11; Matthew 11:28-29; 22:14
2nd – God Calls Some People Inwardly (effectual calling) – 1 Thessalonians 1:4-6; John 5:25; 10:3-4, 27