Guaranteed
2Cor 5:5 Now it is God who has made us for this very purpose and has given us the Spirit as a deposit, guaranteeing what is to come.
The saints are guaranteed eternal life. Those who are in Christ have eternal security, the Spirit being a guarantee of that fact. For "he set his seal of ownership on us, and put his Spirit in our hearts as a deposit, guaranteeing what is to come." 2Cor 1:22 And "you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession— to the praise of his glory." Eph 1:13,14
What was the purpose God made us for? It was for the purpose of showing his graciousness in redeeming sinners unto eternal life "into an inheritance that can never perish, spoil or fade— kept in heaven for you, who through faith are shielded by God’s power until the coming of the salvation that is ready to be revealed in the last time." 1Peter 1:4,5