By verses 12 and 13, the rebuke has shifted from behavior to attitude. Earlier, God confronted the priests on what they were doing. Now he confronts them on what they are feeling and saying while they do it. They have been at this long enough that they have grown comfortable with their compromise. The polluted offerings no longer bother them. The table of the Lord feels like a burden. They snort at the whole enterprise. This is what happens when sin goes unchecked and unrepented of: it does not simply stay where it is. It multiplies and hardens.
Peter Adam’s commentary observation is worth sitting with: here we see sin that breeds sin, and sin that breeds worse sin. They began by accepting worthless sacrifices. That led to despising the altar itself. If the sacrifices are worthless, the reasoning goes, the table must be worthless too. And a worthless table means a worthless God. What started as negligence has curdled into contempt. The attitude of weariness is the fruit of a heart that has been slowly shrinking away from God for a long time.
For believers today, this is a warning against letting spiritual dryness become spiritual bitterness. There are seasons when prayer feels empty and Scripture feels distant. Those seasons are normal, and they are not automatically sinful. But when we respond to dryness by reducing our investment rather than pressing harder into God, we put ourselves on the same downward spiral as these priests. The antidote is not to feel more before we act. It is to act faithfully even when we do not feel much, trusting that God uses the practice of obedience to renew the affections.