Why has it been said that the power of the speaker of the house is the power of scheduling?

The Speaker of the House wields significant power primarily through their control over the legislative agenda and scheduling of debates. By determining which bills come to the floor for discussion and when, the Speaker can prioritize certain issues and influence the outcome of legislation. This scheduling authority allows the Speaker to shape the legislative priorities of the House, effectively guiding the political narrative and strategy. Thus, the power to schedule is a crucial tool for advancing a party's goals and managing the legislative process.