I believe they are not the same . Elect is most often ISRAEL but its always in the context of service and purpose. Predestination is like when we use our sat nav . We pre choose a destination ahead of time . When we become a son ( through the new birth . John 1.12 ) now we are predestined to the Adoption/ inheritance ect . Eph 1.5 / . Romans 8.23 , eph 1.13-14 ect . By being in an eternal being ( in him ) We recieve all the blessings in heavely places ,in Christ Jesus . Reading eph 2.11 onwards tells us what being outside of Christ means .
Ok from your position when and what are you chosen for and when and what are you predestined for ?