The author of the work in question and the exact date of its creation remain unknown. In terms of style, the painting can be an example of religious painting of the first half of the 20th century. The scene illustrates the Ascension of Christ. This event is described in the Gospels of St. Mark (Mk 16:19), St. Luke (Lk 24:50-51) and the Acts of the Apostles (Acts 1:9-11). After the resurrection Christ spent 40 days among his disciples. After that time the apostles went together to the Mount of Olives. In their presence, Jesus rose up and disappeared. In Christian iconography, a scene of the Ascension is depicted in two ways - the Risen Christ rises up against clouds in the background and apostles accompanying him stare at the sky or Christ who has already ascended to the sky, and the trace that remains of him is the reflection of feet visible on the rock.
Justyna Kuska, "Ascension", [in:] "The Sacred Lesser Poland Heritage", 2022, source: https://sdm.upjp2.edu.pl/en/works/ascension