The call to salvation is the hearing of the Gospel . The Gifts such as 'eternal life are irrevocable. ' The Call to salvation 'is not an imward effectual irresistible call . Thats calvinism .
I've said all along we are sealed by the Holy Spirit until the day of redemption. Thats true OSAS and not the P in Tulip
There are 2 callings: Gospel and vocational, not inward or outward or effectual or ineffectual, etc… (2 Thess. 2:14; Eph. 4:1; Rom. 8:28; 2 Cor. 5:20)