We have a foretaste of heaven inside us

Paul uses the Greek term arrhabôn, a term used in business documents for a downpayment, to describe the gift of the Spirit as a foretaste of our future inheritance (2 Cor 1:22; 5:5; Eph 1:13-14). The Spirit is also the aparchê, the first fruits of our future experience with God (Rom 8:23). Through the Spirit, we await full vindication (Gal 5:5) and experience a foretaste of the coming world (1 Cor 2:9-10).

See https://www.youtube.com/watch?v=g2e3pJO3nH8 (1 minute)