Salvation belongs to the Lord; your blessing be on your people!
Salvation is possessed by God. He is the owner of it, He distributes it as He pleases, He is liberal with that distribution of salvation. It is not something we own, it is not something we distribute, it is not for us to horde.
Yes, I hear the objections already. "BUT, it's now mine. God gave me my regeneration!" I would urge you, if you have this objection or one similar to read that quote from Psalm 3 again. The plain text says Salvation belongs to the Lord.
Our Heavenly Father dispenses salvation through a variety of means: baptism, hearing The Word, and at The Lord's Table. It is He who keeps it and gives it to us. It is why we never outgrow our need for the Gospel, it is the milk that we yearn for like newborn babes with childlike faith.
Are you fearful because of Psalm 3? Does that make you uncomfortable? I hope it does if you believe salvation is your possession. Why do I hope you are uncomfortable with those words? Because it means you know what they are saying is true. When you wrestle with God over scripture's plain reading, you and God both win. You get each other in the end.
Here is the promise of God in dispensing His salvation:
For he says, “In a favorable time I listened to you, and in a day of salvation I have helped you.” Behold, now is the favorable time; behold, now is the day of salvation.
Cling to that!