What do believers that are effectually called partake of in this life?

Believers who are effectually called partake of justification, adoption, and sanctification in this life. This is a foundational concept in Reformed theology, particularly as articulated in the Westminster Shorter Catechism.

Justification refers to the act of God declaring a sinner to be righteous on the basis of faith in Christ, which grants believers a right standing before God. Adoption includes the believer being received into the family of God, set apart as His children, with all the privileges that entails, such as a relationship with God and the promise of inheritance. Sanctification, on the other hand, is the process by which a believer is made holy, involving an ongoing transformation towards Christlikeness as they grow in faith and obedience.

The other options do not encompass the full scope of what believers partake in. For instance, while justification and adoption are crucial, neglecting sanctification would fail to recognize the complete work of salvation in the believer's life. Justification and sanctification alone omit the relational aspect of being adopted as God's children. Lastly, assurance of salvation and eternal life are indeed precious realities but do not constitute the primary elements of salvation that believers experience in this life as laid out in the catechism. Thus, the correct answer captures the