Elijah asks a starving widow to share her very last provisions with him.  Trusting in God's promise, her meager resources last them through an entire year.  Our Lord asks us for a similar trusting generosity in times of fatigue and discouragement.  The Mass makes present Christ as true spiritual food, enriching enough for our earthly pilgrimage and a gateway to heaven.  It also makes present Christ's redemptive sacrifice, powerful enough to overcome all evil and sin.  To follow Christ, we need to avoid pharisaical self-righteousness.  This is the temptation to trust in ourselves, to make ourselves good, while avoiding the blessed uncertainty and the messy humility of the "way of the grain."  https://comeawaybyyourselves.com