Appointed Readings
Historically the Epistle was Joel alone, with no New Testament reading before the Gospel; the 2 Peter Epistle is a modern LSB addition.
Introit & Collect Historic Western
The historic Western rite’s propers for this weekday Mass — not found in Lutheran service books; given for reference alongside the readings.
Introit
Thou hast mercy upon all, O Lord, and hatest none of the things which thou hast made, winking at the sins of men for the sake of repentance, and sparing them; for thou art the Lord our God. Psalm. Have mercy on me, O God, have mercy on me; for my soul trusteth in thee.
Collect of the Day
Grant to thy faithful, O Lord, that they may begin the venerable solemnities of fasting with becoming piety, and perform them with secure devotion. Through our Lord, &c.
Introit and Collect from Husenbeth’s Missal for the Use of the Laity (London, 1853), public domain; cross-verified against the Philadelphia Roman Missal … for the Use of the Laity (1861).
Source: The Lutheran Missal, "Lenten Lections" (11 February 2020), https://lutheranmissal.home.blog/2020/02/11/lenten-lections/ — the historic Western (Roman-rite) Lenten ferial lectionary in its late-medieval German / Lutheran recension. Introits and collects: F. C. Husenbeth, The Missal for the Use of the Laity (London, 1853), public domain; cross-verified against The Roman Missal … for the Use of the Laity (Philadelphia, 1861) and The Anglican Missal (1921).